Question

Amoeba and Paramecium belong to which category of organisms?
A. Protozoa
B. Porifera
C. Algae
D. Bacteria

Answer 1

Hint:The Amoeba is a unicellular organism with an irregular shape. It is the simplest organism with no chromosomes. Moreover, the Paramecium is also known as the slipper animalcules. It is also a unicellular organism with two nuclei.

Complete answer:Amoeba and Paramecium are both eukaryotic unicellular organisms. Amoeba moves with the help of the Pseudopodia and the Paramecium moves with the help of cilia.
Protozoa –
The word protozoa are made up of two words, Pro meaning first and Zoa meaning animal. The Protozoans belong to the Kingdom Protista. They are the eukaryotic unicellular organisms now called the acellular organisms. These organisms perform all the metabolic activities due to which they are called complete organizations but not cells.
Porifera –
It belongs to the Kingdom Animalia. It consists of multicellular organisms having the cellular level of organization. It consists of sponges. These organisms have spores all over their bodies.
Algae –
It belongs to the Kingdom Plantae. It consists of unicellular and multicellular forms of plants that are not well defined. They are photosynthetic and green-colored organisms.
Bacteria –
It belongs to the Kingdom Monera. It consists of unicellular organisms that are prokaryotic. The Kingdom Monera is divided into Archaebacteria and Eubacteria. Together they consist of all the types of bacteria that are present.
Thus, based on the above information we can conclude that the Amoeba and Paramecium belong to the Protozoa category of organisms.

Hence, the correct answer is an option (A).

Note: The protozoa are the organisms with the protoplasmic level or organization. The mode of nutrition in Protozoans is Holozoic and Ingestive. They were considered as animals because of the irritability or the response to stimuli.